<template>
  <div class="avatar">
          <div>
        <span>修改头像</span>
      </div>
    <div style="text-align: center">
      <el-upload
        class="avatar-uploader"
        action="#"
        :show-file-list="false"
        :on-success="handleAvatarSuccess"
        :before-upload="beforeAvatarUpload"
        :on-change="changeUpload"
      >
        <img
          v-if="imageUrl"
          :src="imageUrl"
          class="avatar"
          @click.stop="dialogVisible = true"
        />
        <i v-else class="el-icon-plus avatar-uploader-icon"></i>
      </el-upload>
    </div>
    
    <el-dialog title="图片剪裁" :visible.sync="dialogVisible" append-to-body>
     
      <div class="cropper-content">
   
        <div class="cropper" style="text-align: center">
          <vueCropper
            ref="cropper"
            :img="option.img"
            :outputSize="option.size"
            :outputType="option.outputType"
            :info="true"
            :full="option.full"
            :canMove="option.canMove"
            :canMoveBox="option.canMoveBox"
            :original="option.original"
            :autoCrop="option.autoCrop"
            :fixed="option.fixed"
            :fixedNumber="option.fixedNumber"
            :centerBox="option.centerBox"
            :infoTrue="option.infoTrue"
            :fixedBox="option.fixedBox"
          ></vueCropper>
        </div>
      </div>
      <div slot="footer" class="dialog-footer">
        <el-button @click="dialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="finish" :loading="loading"
          >确认</el-button
        >
      </div>
    </el-dialog>
    <div slot="footer">
      <Button type="error" size="large" long @click="cImg(imgFile.raw)"
        >确认</Button
      >
    </div>
  </div>
</template>

<script>
export default {
  name: "Avatar",
  data() {
    return {
      imageUrl: "",
      imgFile: "",
      dialogVisible: false,
      // 裁剪组件的基础配置option
      option: {
        img: "", // 裁剪图片的地址
        info: true, // 裁剪框的大小信息
        outputSize: 0.8, // 裁剪生成图片的质量
        outputType: "jpg", // 裁剪生成图片的格式
        canScale: false, // 图片是否允许滚轮缩放
        autoCrop: true, // 是否默认生成截图框
        // autoCropWidth: 300, // 默认生成截图框宽度
        // autoCropHeight: 200, // 默认生成截图框高度
        fixedBox: true, // 固定截图框大小 不允许改变
        fixed: true, // 是否开启截图框宽高固定比例
        fixedNumber: [7, 5], // 截图框的宽高比例
        full: true, // 是否输出原图比例的截图
        canMoveBox: false, // 截图框能否拖动
        original: false, // 上传图片按照原始比例渲染
        centerBox: false, // 截图框是否被限制在图片里面
        infoTrue: true, // true 为展示真实输出图片宽高 false 展示看到的截图框宽高
      },
      // 防止重复提交
      loading: false,
    };
  },
  methods: {
    changeUpload() {
      // console.log(file);
      //   this.fileinfo = file;
      // 上传成功后将图片地址赋值给裁剪框显示图片
      this.$nextTick(() => {
        console.log(this.imageUrl);
        this.option.img = this.imageUrl;
      });
    },
    // 点击裁剪，这一步是可以拿到处理后的地址
    finish() {
      this.$refs.cropper.getCropBlob((data) => {
        console.log(this.$refs);
        console.log(data);
        this.loading = true;
        let formData = new FormData();
        formData.append("file", data);
        this.$userApi
          .sendImg({
            data: formData,
          })
          .then((res) => {
            console.log(res);
            this.$userApi
              .changeUserImg({
                data: {
                  avatarUrl: res.data.url,
                },
              })
              .then((res) => {
                console.log(res);
                this.$store.state.user.userInfo.avatar = res.data[0].avatar;
                this.loading = false;
                this.dialogVisible = false;
              });
          });
      });
    },
    cImg(url) {
      // console.log(url);
      let formData = new FormData();
      formData.append("file", url);
      this.$userApi
        .sendImg({
          data: formData,
        })
        .then((res) => {
          if (res.ret === 200) {
            this.$userApi
              .changeUserImg({
                data: {
                  avatarUrl: res.data.url,
                },
              })
              .then((res) => {
                this.$store.state.user.userInfo.avatar = res.data[0].avatar;
                console.log(res);
              });
          }
        });
    },
    handleAvatarSuccess(res, file) {
      this.imgFile = file;
      this.imageUrl = URL.createObjectURL(file.raw);
    },
    beforeAvatarUpload(file) {
      const isJPG = file.type.includes("image");
      const isLt2M = file.size / 1024 / 1024 < 2;

      if (!isJPG) {
        this.$message.error("请上传图片");
      }
      if (!isLt2M) {
        this.$message.error("上传头像图片大小不能超过 2MB!");
      }
      return isJPG && isLt2M;
    },
  }
};
</script>

<style lang="scss" scoped>
// 截图
.cropper-content {
  .cropper {
    width: auto;
    height: 300px;
  }
}
.avatar {
  .avatar-uploader .el-upload {
    border: 1px dashed #d9d9d9;
    border-radius: 6px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
  }
  .avatar-uploader .el-upload:hover {
    border-color: #409eff;
  }
  .avatar-uploader-icon {
    font-size: 28px;
    color: #8c939d;
    width: 178px;
    height: 178px;
    line-height: 178px;
    text-align: center;
  }
  .avatar {
    width: 178px;
    height: 178px;
    display: block;
  }
}
</style>